Adjustable shade for electric lights.



Patented June 21, 1910.

DI .D!

ADJUSTABLE SHADE FOR ELECTRIC LIGHTS.

APPLIOATION FILED JUNE5 1909 WITNESSES:

Z ZBMQ f pnrr stars ATET DAVID D. LOCKWOOD, OF BRIDGEPOBT, CONNECTICUT.

ADJUSTABLE SHADE FOR ELECTRIC LIGHTS.

To all whom it may concern:

Be it known that I, DAVID D. Looxwoon, a citizen of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Adjustable Shades for Electric Lights; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appert-ains to make and use the same.

My invention relates to adjustable shades for electric lights, but more particularly has reference to shade attachments for incandescent electric lights such as are commonly used in factories.

The object of my improvement is to provide a shade which can be readily attached to or removed from the socket of the light and which shall be adjustable around the bulb and lengthwise thereof, and with these ends in view my invention consists in certain details of construction and combination of parts hereinafter fully explained and then particularly pointed out in the claim which concludes this description.

In the accompanying drawing Figure 1 is an elevation showing an incandescent light equipped with my improvementFig. 2 a detail broken plan view of my improvementFig. 3 a detail plan of the spring yoke which engages the lamp socket, and Fig. t a detail elevation of the shade clip.

Similar numerals of reference denote like parts in the several figures of the drawing.

1 is the socket of an incandescent light, 2 the usual switch key and 3 the bulb.

4 is a shade of any suitable shape and dimensions. The shade clip is formed in one piece from spring metal and comprises twin spring eyes 6 separated by a space 7, and fingers 8 which embrace the edge of the shade and are secured thereto in any suitable manner, as for instance by soldering.

The yoke which embraces the socket 1 is made from a single piece of spring metal, and comprises resilient arms 9 which extend from a tang 10 which latter is assembled within the space 7 and between the eyes 6 and is held by means of a headed bolt 11 passed through the eyes and tang and engaged at its free end by a thumb nut 12.

Specification of Letters Patent.

Application filed June 5, 1909.

Patented June 21, 1910.

Serial No. 500,290.

At one side of the clip adjacent to the base of one of the eyes 6 a shoulder 13 is formed and the head of the bolt 11 has a squared portion 14 which fits against said shoulder so that when the thumb nut 12 is operated to relax or bind the eyes the shade may be swung lengthwise of the bulb and secured in any desired adjustment, and the bolt 11 will remain stationary and will not turn.

It will be observed by reference to Fig. 8 that the tang portion of the yoke element is formed by doubling the spring metal upon itself and that the opposite sides of this tang are normally distended, so that when the thumb nut 12 is relaxed the tang will bear against the edges of the eyes with more or less friction which is sufiicient to prevent the shade from dropping bodily against the bulb and breaking the same.

In applying my improvement the lower portion of the socket is merely forced between the arms of the yoke which latter by their resiliency will firmly embrace the socket and at the same time will permit of the ready adjustment of the shade around the bulb, and this will be effected without interfering in the slightest degree with the manipulation of the switch key.

By providing the resilient tang and eyes, I am enabled to do away entirely with the use of any special devices for preventing the sudden dropping of the shade, and the latter may readily be adjusted in a vertical plane.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is A shade for an incandescent light bulb, comprising a clip having spring eyes separated by a space, a suitable shade to which said clip is secured, spring arms having a tang which latter extends within said space, a headed bolt extending through said eyes and tang, and a thumb nut whereby the parts may be secured together and relaxed.

In testimony whereof I aflix my signature 1n presence of two wltnesses.

DAVID D. LOCKWOOD.

. Witnesses:

F. l/V. SMITH, J r., M. T. LONGDEN. 

